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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .05800867924624638 | 4.6927e-08 | |
| a | 5.216027874506243 | 7.801e-08 | au |
| q | 4.91345298659453 | 2.8981e-07 | au |
| i | 9.148607639762652 | 5.6647e-06 | deg |
| node | 176.5561162424237 | 2.2375e-05 | deg |
| peri | 231.8083266243859 | 4.8079e-05 | deg |
| M | 326.1937918423384 | 4.252e-05 | deg |
| tp | 2459609.103650900995
(2022-Jan-29.60365090) | 0.00051386 | TDB |
| period | 4351.192350184391
11.91 | 9.7613e-05
2.672e-07 | d
yr |
| n | .08273594247901823 | 1.8561e-09 | deg/d |
| Q | 5.518602762417956 | 8.2535e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.84 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
37.980 |
km |
0.315 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
|
| geometric albedo |
albedo |
0.064 |
|
0.003 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
|
|
| 2148 Epeios (1976 UW) Discovered 1976-Oct-24 by West, R. M. at La Silla |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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